/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/freire2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-19 23:34:37,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 23:34:37,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 23:34:38,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 23:34:38,063 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-19 23:34:38,093 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 23:34:38,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 23:34:38,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-19 23:34:38,094 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-19 23:34:38,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-19 23:34:38,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-19 23:34:38,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-19 23:34:38,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-19 23:34:38,097 INFO L138 SettingsManager]: * Use SBE=true [2022-03-19 23:34:38,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 23:34:38,098 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 23:34:38,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 23:34:38,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 23:34:38,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 23:34:38,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 23:34:38,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 23:34:38,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 23:34:38,098 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 23:34:38,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 23:34:38,099 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 23:34:38,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 23:34:38,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 23:34:38,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 23:34:38,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 23:34:38,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 23:34:38,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 23:34:38,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-19 23:34:38,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-19 23:34:38,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-19 23:34:38,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-19 23:34:38,101 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-19 23:34:38,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-19 23:34:38,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 23:34:38,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 23:34:38,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 23:34:38,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 23:34:38,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 23:34:38,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 23:34:38,348 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 23:34:38,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/freire2.c [2022-03-19 23:34:38,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/772957a42/c60cbf2ab0da4d25ad1be59a898d3b9c/FLAGbf99fc194 [2022-03-19 23:34:38,778 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 23:34:38,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire2.c [2022-03-19 23:34:38,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/772957a42/c60cbf2ab0da4d25ad1be59a898d3b9c/FLAGbf99fc194 [2022-03-19 23:34:38,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/772957a42/c60cbf2ab0da4d25ad1be59a898d3b9c [2022-03-19 23:34:38,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 23:34:38,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 23:34:38,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 23:34:38,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 23:34:38,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 23:34:38,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 11:34:38" (1/1) ... [2022-03-19 23:34:38,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a897ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:34:38, skipping insertion in model container [2022-03-19 23:34:38,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 11:34:38" (1/1) ... [2022-03-19 23:34:38,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 23:34:38,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 23:34:38,944 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire2.c[709,722] [2022-03-19 23:34:38,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 23:34:38,990 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 23:34:38,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire2.c[709,722] [2022-03-19 23:34:39,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 23:34:39,017 INFO L208 MainTranslator]: Completed translation [2022-03-19 23:34:39,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:34:39 WrapperNode [2022-03-19 23:34:39,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 23:34:39,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 23:34:39,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 23:34:39,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 23:34:39,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:34:39" (1/1) ... [2022-03-19 23:34:39,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:34:39" (1/1) ... [2022-03-19 23:34:39,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:34:39" (1/1) ... [2022-03-19 23:34:39,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:34:39" (1/1) ... [2022-03-19 23:34:39,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:34:39" (1/1) ... [2022-03-19 23:34:39,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:34:39" (1/1) ... [2022-03-19 23:34:39,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:34:39" (1/1) ... [2022-03-19 23:34:39,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 23:34:39,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 23:34:39,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 23:34:39,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 23:34:39,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:34:39" (1/1) ... [2022-03-19 23:34:39,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 23:34:39,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 23:34:39,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 23:34:39,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 23:34:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 23:34:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 23:34:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 23:34:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-19 23:34:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 23:34:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 23:34:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 23:34:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 23:34:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 23:34:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 23:34:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-03-19 23:34:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-19 23:34:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 23:34:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 23:34:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 23:34:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 23:34:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 23:34:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 23:34:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 23:34:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 23:34:39,161 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 23:34:39,163 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 23:34:39,262 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 23:34:39,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 23:34:39,267 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 23:34:39,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 11:34:39 BoogieIcfgContainer [2022-03-19 23:34:39,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 23:34:39,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 23:34:39,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 23:34:39,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 23:34:39,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 11:34:38" (1/3) ... [2022-03-19 23:34:39,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f00c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 11:34:39, skipping insertion in model container [2022-03-19 23:34:39,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:34:39" (2/3) ... [2022-03-19 23:34:39,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f00c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 11:34:39, skipping insertion in model container [2022-03-19 23:34:39,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 11:34:39" (3/3) ... [2022-03-19 23:34:39,280 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c [2022-03-19 23:34:39,284 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-19 23:34:39,284 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 23:34:39,339 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 23:34:39,362 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 23:34:39,362 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 23:34:39,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-19 23:34:39,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-19 23:34:39,389 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 23:34:39,390 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 23:34:39,390 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 23:34:39,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 23:34:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 515438393, now seen corresponding path program 1 times [2022-03-19 23:34:39,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 23:34:39,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585948306] [2022-03-19 23:34:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 23:34:39,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 23:34:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 23:34:39,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 23:34:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 23:34:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 23:34:39,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 23:34:39,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585948306] [2022-03-19 23:34:39,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585948306] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 23:34:39,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 23:34:39,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 23:34:39,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871805419] [2022-03-19 23:34:39,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 23:34:39,602 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 23:34:39,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 23:34:39,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 23:34:39,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 23:34:39,637 INFO L87 Difference]: Start difference. First operand has 25 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 23:34:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 23:34:39,723 INFO L93 Difference]: Finished difference Result 44 states and 66 transitions. [2022-03-19 23:34:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 23:34:39,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-03-19 23:34:39,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 23:34:39,740 INFO L225 Difference]: With dead ends: 44 [2022-03-19 23:34:39,740 INFO L226 Difference]: Without dead ends: 20 [2022-03-19 23:34:39,744 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 23:34:39,748 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 23:34:39,749 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 23:34:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-03-19 23:34:39,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-03-19 23:34:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-19 23:34:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-03-19 23:34:39,799 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2022-03-19 23:34:39,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 23:34:39,800 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-03-19 23:34:39,801 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 23:34:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-03-19 23:34:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-19 23:34:39,803 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 23:34:39,803 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 23:34:39,804 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 23:34:39,805 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 23:34:39,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 23:34:39,810 INFO L85 PathProgramCache]: Analyzing trace with hash 517106689, now seen corresponding path program 1 times [2022-03-19 23:34:39,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 23:34:39,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759727473] [2022-03-19 23:34:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 23:34:39,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 23:34:39,832 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 23:34:39,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133842423] [2022-03-19 23:34:39,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 23:34:39,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 23:34:39,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 23:34:39,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 23:34:39,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 23:34:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 23:34:39,908 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 23:34:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 23:34:39,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 23:34:39,943 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-19 23:34:39,944 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 23:34:39,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 23:34:40,170 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 23:34:40,174 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-19 23:34:40,176 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 23:34:40,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 11:34:40 BoogieIcfgContainer [2022-03-19 23:34:40,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 23:34:40,197 INFO L158 Benchmark]: Toolchain (without parser) took 1391.78ms. Allocated memory was 175.1MB in the beginning and 265.3MB in the end (delta: 90.2MB). Free memory was 144.3MB in the beginning and 193.3MB in the end (delta: -48.9MB). Peak memory consumption was 40.2MB. Max. memory is 8.0GB. [2022-03-19 23:34:40,198 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 175.1MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 23:34:40,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.33ms. Allocated memory was 175.1MB in the beginning and 265.3MB in the end (delta: 90.2MB). Free memory was 144.1MB in the beginning and 236.2MB in the end (delta: -92.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-19 23:34:40,199 INFO L158 Benchmark]: Boogie Preprocessor took 29.67ms. Allocated memory is still 265.3MB. Free memory was 235.7MB in the beginning and 234.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-19 23:34:40,199 INFO L158 Benchmark]: RCFGBuilder took 219.90ms. Allocated memory is still 265.3MB. Free memory was 234.1MB in the beginning and 223.1MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-19 23:34:40,199 INFO L158 Benchmark]: TraceAbstraction took 926.04ms. Allocated memory is still 265.3MB. Free memory was 222.6MB in the beginning and 193.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-03-19 23:34:40,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 175.1MB. Free memory is still 129.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 211.33ms. Allocated memory was 175.1MB in the beginning and 265.3MB in the end (delta: 90.2MB). Free memory was 144.1MB in the beginning and 236.2MB in the end (delta: -92.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.67ms. Allocated memory is still 265.3MB. Free memory was 235.7MB in the beginning and 234.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 219.90ms. Allocated memory is still 265.3MB. Free memory was 234.1MB in the beginning and 223.1MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 926.04ms. Allocated memory is still 265.3MB. Free memory was 222.6MB in the beginning and 193.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L32] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L33] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 24 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-03-19 23:34:40,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...